Moviegoers seeing Disney's "Incredibles 2" might notice some health-related warning signs posted regarding the film, which had the biggest box office opening for an animated movie ever.While Disney is celebrating the return of “The Incredibles,” it also issued an unprecedented warning. Social media users posted concerns over the weekend expressing fears that one scene in the film could trigger seizures for some viewers.The scene in question involves a villain named Screenslaver and features a series of bright flashing lights. Disney has asked theaters showing “The Incredibles 2” to alert customers about that scene.The warnings pertain to the 3% of people with epilepsy for whom visual stimulation at certain intensities -- such as flashing lights or moving patterns -- can trigger seizures.It's called photosensitive epilepsy and is more common in teenagers and younger children. About 50 million people worldwide have epilepsy, making it one of the most common neurological diseases, according to the World Health Organization.This isn't the first time children's media have contained some potentially seizure-triggering visual effects.In 1997, flashing lights in the popular television cartoon "Pokemon" were tied to more than 600 cases of convulsions, vomiting, irritated eyes and other symptoms among children in Japan."Members of our community have expressed concerns about flashing lights in the new Disney Pixar movie 'Incredibles 2,' and, in certain instances, people having experienced a seizure during the movie," said a statement posted online Saturday by the Epilepsy Foundation."We stand with our epilepsy warriors and their families as they voice their concerns about the movie and appreciate the efforts some theaters have already made to post warning signs for people waiting to see the movie," the statement said.

While Disney is celebrating the return of “The Incredibles,” it also issued an unprecedented warning. Social media users posted concerns over the weekend expressing fears that one scene in the film could trigger seizures for some viewers.

The warnings pertain to the 3% of people with epilepsy for whom visual stimulation at certain intensities -- such as flashing lights or moving patterns -- can trigger seizures.

It's called photosensitive epilepsy and is more common in teenagers and younger children.

About 50 million people worldwide have epilepsy, making it one of the most common neurological diseases, according to the World Health Organization.

This isn't the first time children's media have contained some potentially seizure-triggering visual effects.

In 1997, flashing lights in the popular television cartoon "Pokemon" were tied to more than 600 cases of convulsions, vomiting, irritated eyes and other symptoms among children in Japan.

"Members of our community have expressed concerns about flashing lights in the new Disney Pixar movie 'Incredibles 2,' and, in certain instances, people having experienced a seizure during the movie," said a statement posted online Saturday by the Epilepsy Foundation.

"We stand with our epilepsy warriors and their families as they voice their concerns about the movie and appreciate the efforts some theaters have already made to post warning signs for people waiting to see the movie," the statement said.